Atoms (pg. 42-46) Flashcards
1
Q
What are Ions?
A
When electrons are lost or gained from the outer electron shell to become electrically charged
2
Q
if an e- is lost what type of Ion is it?
A
Cation
3
Q
If an e- is gained what type of ion is it?
A
Anion
4
Q
What are an element, a Molecular element, and a compound?
A
ELEMENT: made up of one type of atom
MOLECULAR ELEMENTS: made up of two or more atoms of the same element.
COMPOUNDS: made up of different types of atoms
5
Q
What is Atomic number & Mass number
A
ATOMIC NUMBER: no. of protons in the nucleus
MASS NUMBER: no of protons and neutrons
6
Q
What are protons electrons and neutrons
A
Protons +
Electrons -
neutrons = no charge
7
Q
What is radioactivity
A
lose protons or neutrons
8
Q
How many electrons in the Bohr diagram in each self
A
1st shelf: 2 e-
2nd shelf: 8 e-
3rd shelf: 18 e-
